67b859cf13
Reviewers: buda, teon.banek, florijan Reviewed By: buda Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D468
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//
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// Copyright 2017 Memgraph
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// Created by Florijan Stamenkovic on 08.03.17.
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//
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#ifndef MEMGRAPH_PARAMETERS_HPP
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#define MEMGRAPH_PARAMETERS_HPP
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#include <algorithm>
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#include <utility>
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#include <vector>
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#include "query/typed_value.hpp"
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/**
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* Encapsulates user provided parameters (and stripped literals)
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* and provides ways of obtaining them by position.
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*/
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struct Parameters {
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public:
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/**
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* Adds a value to the stripped arguments under a token position.
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*
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* @param position Token position in query of value.
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* @param value
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*/
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void Add(int position, const query::TypedValue &value) {
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storage_.emplace_back(position, value);
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}
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/**
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* Returns the value found for the given token position.
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*
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* @param position Token position in query of value.
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* @return Value for the given token position.
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*/
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const query::TypedValue &AtTokenPosition(int position) const {
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auto found = std::find_if(storage_.begin(), storage_.end(),
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[&](const std::pair<int, query::TypedValue> a) {
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return a.first == position;
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});
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permanent_assert(found != storage_.end(),
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"Token position must be present in container");
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return found->second;
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}
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/**
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* Returns the position-th stripped value. Asserts that this
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* container has at least (position + 1) elements.
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*
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* @param position Which stripped param is sought.
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* @return Token position and value for sought param.
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*/
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const std::pair<int, query::TypedValue> &At(int position) const {
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permanent_assert(position < static_cast<int>(storage_.size()),
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"Invalid position");
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return storage_[position];
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}
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/** Returns the number of arguments in this container */
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int size() const { return storage_.size(); }
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private:
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std::vector<std::pair<int, query::TypedValue>> storage_;
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};
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#endif // MEMGRAPH_PARAMETERS_HPP
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